The total amount of receipts from the operations of the Board and from sales of property for the year beginning January 1, 1909, and ending December 31, 1909, is $108,761.48, and the total amount from the time of the organization of the Metropolitan Water Board, July 19, 1895, to December 31, 1909, is $652,593.82. The general character of these receipts is as follows:

The foregoing receipts have been credited to the various objects or works, as follows:

The following is an abstract of the assets of the Water Works, a complete schedule of which is kept on file in the office of the Board:

Office furniture, fixtures and supplies; engineering and scientific instruments and supplies; police supplies; horses, vehicles, field machinery, etc.; machinery, tools and other appliances and supplies; real estate connected with works not completed; completed works, including real estate and buildings connected therewith.

(d) Liabilities.

The sums due on monthly pay rolls amount to $1,487.46, and there are bills for current expenses which have not yet been received.

Amounts on Monthly Estimates, not due until Completion of Contracts or until Claims are settled.

A claim of the town of Boylston for land taken has been settled for the sum of $800 but the papers in settlement have not yet been executed.

It is impossible to state the amounts due on the claims of the following for land damages, for water rights taken and for damages to established business, as no sums have been agreed upon, and suits are now pending in court for the determination of most of them:

Patrick Bradley, Henry F. Keyes, James E. Welch, Byron D. Allen, J. Frank Wood et al., Asa Knight, Edward F. Merriam, Sanford C. Kendall, estate of William H. Vickery, James H. and Hannah S. Wood, Francis W. M. Goodale, Nellie M. Kirby, Boston & Albany Railroad Company, heirs of Willard Morse.

VII. METROPOLITAN SEWERAGE WORKS.

The North Metropolitan System provides for the area situated in the Mystic River valley and for the larger part of the Charles River valley which lies north of the Charles River. The district

provided for embraces the cities of Cambridge, Chelsea, Everett, Malden, Medford, Melrose, Somerville and Woburn, parts of the city of Boston, and the towns of Arlington, Belmont, Stoneham, Winchester and Winthrop, which were included in the original North Metropolitan District established under the Act of the year 1889. Under subsequent acts the district has been extended by the inclusion of the towns of Wakefield and Revere and a part of the town of Lexington, and now embraces 9 cities and 8 towns. The district has an area of 90.50 square miles. It has an estimated population as of December 31, 1909, based upon the census of 1905, of 515,397; and it is estimated that of this number, 445,637, or 86.5 per cent., contribute sewage to the North Metropolitan System.

The South Metropolitan System provides for the areas situated in that part of the Charles River valley lying south of the Charles River, a small portion of the valley north of the Charles River and also a portion of the Neponset River valley. The district includes what was originally established by the Act of the year 1889 as the Charles River Valley System, for the cities of Newton, Waltham and a part of the city of Boston, and the towns of Brookline and Watertown. It also includes the towns of Hyde Park and Milton and a part of the town of Dedham, which were embraced in the Neponset River Valley System established under the Act of 1895. The two systems were united under the name of the South Metropolitan System by the Act of the year 1899, providing for the Highlevel Sewer, which extended the system to the city of Quincy. There are now 4 cities and 5 towns included within the district, which has an area of 100.87 square miles. It has an estimated population, as of December 31, 1909, of 358,180, of which number it is estimated that 233,025, or 65.1 per cent., contribute sewage to the South Metropolitan System.

(1) NORTH METROPOLITAN SEWERAGE SYSTEM-CONSTRUCTION.

(a) Deer Island Pumping Station Extension.

The extension of the Deer Island pumping station which was authorized by the Legislature of the year 1908, and for which an appropriation of $195,000 was made, has been in progress during the year. The foundations for the building enlargement had already been built by day labor and a contract was made early in the season